Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0333ebc72d59ae…

MALICIOUS

PDF

80.2 KB Created: 2021-03-30 04:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f32ae55efa39b79051b115a8767618e SHA-1: 2bf38f87b43fe8a0ea78734e8d26497454f47fd4 SHA-256: bf0333ebc72d59ae35c995570466a177883e7560c2c0ed3ee60b8279650c1801
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely intended to trick the user into visiting a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a game, further supporting a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://midufefew.ru/wix?keyword=mount+and+blade+warband+weapon+proficiency
    • https://static.s123-cdn-static.com/uploads/4416796/normal_5fc5d0305b5d7.pdf
    • https://cdn-cms.f-static.net/uploads/4387586/normal_60589f5c31a3a.pdf
    • https://cdn-cms.f-static.net/uploads/4406481/normal_5fe92afaac9dc.pdf
    • https://cdn-cms.f-static.net/uploads/4426955/normal_5fe8253dd735a.pdf
    • https://cdn.sqhk.co/vivutazawi/LkifUji/metal_gear_solid_alert_ringtone_iphone.pdf
    • https://static.s123-cdn-static.com/uploads/4393346/normal_5feeb5fe01b95.pdf
    • https://cdn-cms.f-static.net/uploads/4448094/normal_5fd2fe737575a.pdf
    • https://cdn.sqhk.co/roratumopiv/ihjjhic/pafesuvoguwiwa.pdf
    • https://cdn-cms.f-static.net/uploads/4426409/normal_5fd0a7154214a.pdf
    • https://cdn.sqhk.co/bedogipaxog/jcdghgg/border_security_officer_wage.pdf
    • http://sosiwuro.iblogger.org/40901878306.pdf
    • https://cdn.sqhk.co/gekobegij/2u2gggd/28674158235.pdf
    • https://cdn.sqhk.co/navotezive/jjnelz3/black_magic_piano_chords.pdf
    • http://vupiziriwopo.22web.org/fogotuxas.pdf
    • http://votatiji.22web.org/xuxuwabale.pdf
    • https://cdn-cms.f-static.net/uploads/4373776/normal_5fd7a049299b5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dozirojaj.rf.gd/absenteeism_in_school.pdf
    • http://kapifotezuxevup.epizy.com/hinduism_beliefs.pdf
    • https://s3.amazonaws.com/daraniwekamidir/puzamezazixusifiwisoxeza.pdf
    • http://mafulapovura.epizy.com/zogamuxifixu.pdf
    • https://s3.amazonaws.com/wozoxub/my_jio_calling_apps.pdf
    • https://s3.amazonaws.com/nitirew/how_to_program_chamberlain_clicker_with_liftmaster.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc64.bin
6421ac3dd244a90a4e0bfea43bb9969a2383683af511e890be7929383fd9b0fa
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC64 5312 bytes
font_01_sfnt_off00010ea0.bin
7a0ea268884bd225d30dff402661a1514d9f4c428790389c959a5ae612e9f839
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA0 10768 bytes